Hi everybody,
I'm using LW at home. Yesterday I installed LW my computer at work. I have connection problem. Following is the info about my PC and network.

OS : XP Pro SP2
Firewall : A network firewall, IBM Brand, with Windows Server 2003 running, ISA Server
RAM : 1024 M
Disk : 40 GB
Connection : LAN to Firewall and Broadband ADSL to internet
Modem : Linksys WRT300N-EU
LW version : 4.12.8, Java 1.5.0_10
ISP : TTNET
Test result : Test worked
A brick wall exists on blue world.

The ADSL modem and LW are configured to work on UPnP. I defined the proxy server on LW settings, but still a firewall is blocking my connection. My computer is connected to a LAN, a server and a firewall computer are on the LAN also. ADSL is configured to connect to Firewall. All client computers are connected to internet through this firewall. What kind of changes shoud I do on firewall to connect LW?

Thank you in advance.